检查包括有效性、均一性、纯度要求及安全性四个方面纯度要求即药物的杂质检查，亦称纯度检查（Detection of Impurities）纯度检查：一般杂质和特殊杂质铁盐、硫酸盐、重金属、水分合成中间体、副产物、异构体5.
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Experiments proved that before incomplete hydrolysis, acetic anhydride not only couldn'treplace acetic acid, but also had indirect masking action for the detection of impurities.
试验还证明，醋酸酐在未完全水解之前不仅不能代替醋醚，相反对与杂质检出有间接的掩蔽作用。
A high performance liquid chromatography-diode array detection-electrospray ionization tandem mass spectrometry method was developed for analysis and identification of impurities in lovastatin.
利用高效液相色谱-二极管阵列检测器-质谱联用方法对洛伐他丁及其杂质成分进行分离分析和结构鉴定。
For the detection of sulfur impurities detector 46 can be a FPD (flame photometric detector).
为了检测硫杂质，检测器46可以是FPD(火焰光度检测器)。
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